<?php

namespace App\Http\Controllers;

use App\Services\MagentoCategoryMigrationService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Cache;

class OrdersController extends Controller
{
    protected $migrationService;

    public function __construct(MagentoCategoryMigrationService $migrationService)
    {
        $this->migrationService = $migrationService;
    }

    /**
     * Show the orders page
     */
    public function index()
    {
        $m1Orders = $this->migrationService->getMagento1Orders();
        $m2Orders = $this->migrationService->getMagento2Orders();
        $m1OrdersNotInM2 = $this->migrationService->getM1OrdersNotInM2();
        $m2OrdersNotInM1 = $this->migrationService->getM2OrdersNotInM1();

        return view('orders.index', [
            'm1Orders' => $m1Orders,
            'm2Orders' => $m2Orders,
            'm1OrdersNotInM2' => $m1OrdersNotInM2,
            'm2OrdersNotInM1' => $m2OrdersNotInM1,
        ]);
    }

    /**
     * Migrate all orders from Magento 1 to Magento 2
     */
    public function migrateOrders(Request $request)
    {
        try {
            // Handle both JSON and form data
            $dryRun = false;
            $progressKey = null;
            
            if ($request->isJson()) {
                $dryRun = $request->json()->get('dry_run', false);
                $progressKey = $request->json()->get('progress_key', null);
            } else {
                $dryRun = $request->input('dry_run', false);
                $progressKey = $request->input('progress_key', null);
            }
            
            // Convert string "true"/"false" to boolean if needed
            if (is_string($dryRun)) {
                $dryRun = filter_var($dryRun, FILTER_VALIDATE_BOOLEAN);
            }
            
            $result = $this->migrationService->migrateOrders($dryRun, $progressKey);

            return response()->json($result, $result['success'] ? 200 : 400);

        } catch (\Exception $e) {
            Log::error('Order migration error: ' . $e->getMessage());
            Log::error('Stack trace: ' . $e->getTraceAsString());
            
            return response()->json([
                'success' => false,
                'message' => 'Migration failed: ' . $e->getMessage(),
                'added' => 0,
                'updated' => 0,
                'errors' => 0,
                'log' => []
            ], 500);
        }
    }

    /**
     * Get order migration progress
     */
    public function getMigrationProgress(Request $request)
    {
        try {
            $progressKey = $request->input('progress_key');
            
            if (empty($progressKey)) {
                return response()->json([
                    'success' => false,
                    'message' => 'Progress key is required'
                ], 400);
            }

            $progress = Cache::get($progressKey);
            
            if (!$progress) {
                return response()->json([
                    'success' => false,
                    'message' => 'Progress not found',
                    'progress' => null
                ], 404);
            }

            return response()->json([
                'success' => true,
                'progress' => $progress
            ]);

        } catch (\Exception $e) {
            Log::error('Get order migration progress error: ' . $e->getMessage());
            
            return response()->json([
                'success' => false,
                'message' => 'Failed to get progress: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * Get order statistics
     */
    public function getStatistics()
    {
        try {
            $m1Orders = $this->migrationService->getMagento1Orders();
            $m2Orders = $this->migrationService->getMagento2Orders();
            $m1OrdersNotInM2 = $this->migrationService->getM1OrdersNotInM2();
            $m2OrdersNotInM1 = $this->migrationService->getM2OrdersNotInM1();

            return response()->json([
                'success' => true,
                'statistics' => [
                    'm1Orders' => $m1Orders->count(),
                    'm2Orders' => $m2Orders->count(),
                    'm1OrdersNotInM2' => $m1OrdersNotInM2->count(),
                    'm2OrdersNotInM1' => $m2OrdersNotInM1->count(),
                ]
            ]);

        } catch (\Exception $e) {
            Log::error('Get order statistics error: ' . $e->getMessage());
            
            return response()->json([
                'success' => false,
                'message' => 'Failed to get statistics: ' . $e->getMessage()
            ], 500);
        }
    }

    /**
     * Delete a single order from Magento 2
     */
    public function deleteM2Order(Request $request, $orderId)
    {
        try {
            $result = $this->migrationService->deleteM2Order($orderId);

            return response()->json($result, $result['success'] ? 200 : 400);

        } catch (\Exception $e) {
            Log::error('Delete M2 order error: ' . $e->getMessage());
            
            return response()->json([
                'success' => false,
                'message' => 'Deletion failed: ' . $e->getMessage()
            ], 500);
        }
    }
}